PUBLICATIONS & RESEARCH TOPICS

Publications

40+ peer-reviewed publications, 1400+ citations, h-index 13 |ORCID: 0000-0002-6996-0734

On-line listings: ADS | ADS Private Library | OSA | SPIE | Scholar
Printable file with an up-to-date list of publications see here... [pubs]
Interactive publication list (from ccorreia.bib)

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Research Topics

SUPER-SENSITIVE WAVE-FRONT SENSING

We develop ideas on

Super-sensitive wave-front sensors. We're currently integrating a pyramid (modulated) in our lab
Non-linear wave-front sensing. Give linearity away, reach out to new sensitivity realms
Spot-shrinkage for elongated laser-guide stars wave-front sensing on existing detectors

POST-PROCESSING AO-CORRECTED TELEMETRY/PSF RECONSTRUCTON

Post-processing of partially corrected AO data is an Achilles' heel for the reconstruction of the PSF is an extremely complex task to accomplish, already in classical AO, let alone wide-field.

Currently we're developing software classes to

Reconstruct PSF out of tomographic MOAO systems
Provide Keck Observatory with a PSF reconstruction pipeline for the NGS and LGS modes
Pursuing reserach leading to a working pipeline for the AOF's MUSE instrument in wide and narrow field modes
Collaborating with NRC's Herzberg Intitute of Astrophysics in support of PSF reconstruction for LTAO systems (-> useful for out Harmoni project)
Collaborating with TMT PO on their effort to perform PSF reconstruction with MCAO systems

ADVANCED TOMOGRAPHY RECONSTRUCTION METHODS

Turn-key AO requires robustness to operate 100% of the time at full performance. To that end new processing architectures are needed to tackle the curse of dimensionality (scaling with the fourth power of the telescope diameter D⁴) whilst making efficient use of combined LGS and NGS measurements in any of the WFAO modes. We are acquiring expertise and leading efforts in

Fast wave-front reconstruction in the spatial-frequency domain
Multi-time-step tomographic reconstruction
Iterative, large-scale tomographic reconstruction
Kalman filters for large number of degrees-of-freedom architectures

MODELLING SOFTWARE DEVELOPMENT

We support the development of OOMAO, an Object-oriented Matlab Adaptive Optics library of Matlab R ⃝classes.

Objects from the different classes are assembled to perform the numerical modeling of Adaptive Optics systems. OOMAO can be seen as an extension of the Matlab R ⃝ language. Overloaded Matlab R ⃝ operators are used to propagate the wavefront through the system and to update object properties.

Public and private, version-controlled repositories can be found here

OOMAO (Public)
OOMAO (Private) : This repository is intended for internal development in LAM.

I strongly encourage the community to give it a try. It's licence-free and free-of-charge. As a future user, you're welcome to add to it and to become an official co-developer. Please drop me an email.

Past workshops

Tools for Adaptive Optics Simulations on ELTs >>

ATMOSPHERIC PARAMETER CHARACTERISATION AND IDENTIFICAITON

Atmospheric parameter identification is paramount for the runtime optimisation of tomography and the post-processing of AO telemetry.

Past workshops

Atmospheric parameter characterisation and identification >>

http://www.optics.rochester.edu/

PHASE-DIVERSITY FOR SYSTEM CALIBRATION

As part of our running collaborations, we've hosted Masen Lamb, PhD student at UVic for 4 months (Mar-Jun 2016) to develop phase-diversity algorithms for AO systems calibration. These are now being applied to

Fine co-phasing of segmented telescopes
Off-line calibration of non-comon path aberrations
Calibration of low-wind-effect

ccorreia...